compilation fix: only one wxInitialize form may have default argument values

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@61557 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/init.h

@@ -82,7 +82,7 @@ public:
     }
 
 #if wxUSE_UNICODE && wxABI_VERSION >= 20811
-    wxInitializer(int argc = 0, char **argv = NULL)
+    wxInitializer(int argc, char **argv)
     {
         m_ok = wxInitialize(argc, argv);
     }